4WE6J73-62/EG24N9K4/A12电磁换向阀由上海韦米机电设备有限公司专业提供

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4WE6J73-62/EG24N9K4/A12电磁换向阀

结构和工作原理

WE型电磁换向阀采用湿式交流或直流电磁铁。该阀是通过电磁铁控制阀芯的不同工作位置。当电磁铁断电时，阀芯靠弹簧压力保持在中间或终端位置(脉冲式阀除外)。电磁铁通电，阀芯被推到工作位置上，断电后又恢复到初始状态。这时用手推动故障检查按钮可使阀芯移动。

由于湿式电磁铁内部与回油腔相通，这样衔铁油里移动，可以减少磨损、缓冲，并且提高了散热性能，提高了使用寿命。交流电磁铁具有动作时间短，电气控制线路简单，不需特殊的触头保护等特点。直流电磁铁是切换特性软，动作频率高，对过载或低电压反应不敏感，工作可靠。

WE型换向阀是由电磁铁控制的滑阀式换向阀，它主要用于控制液体的通断和流动方向。

其结构主要是由阀体、电磁铁、滑阀以及复位弹簧等组成。在不通电的情况下被复位弹簧保持在中间位置或初始位置上(脉冲阀除外)。电磁铁的推力通过推杆作用在滑阀上，并且把它从静止位置推到工作位置上(终端位置)，由此改变了液流的方向P→A和B→T或者P→B和A→T。当电磁铁断电后，滑阀被复位弹簧重新推到原来的静止位置上。在电磁铁断电时，用故障检查按钮推动滑阀移动。

电磁阀的线圈是指电感器。是指导线一根一根绕起来，导线彼此互相绝缘，而绝缘管可以是空心的，也可以包含铁芯或磁粉芯，简称电感。电感又可分为固定电感和可变电感，固定电感线圈是由导线一圈靠一圈地绕在绝缘管上，导线彼此互相绝缘，而绝缘管可以是空心的，也可以包含铁芯或磁粉芯，简称电感或线圈。用L表示，单位有亨利(H)、毫亨利(mH)、微亨利(uH)，1H=10^3mH=10^6uH。

电磁阀型号

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电磁阀线圈的好坏检测

用万用表量电磁阀的电阻，线圈有电阻应该在100欧姆左右！如果线圈的电阻无穷大说明坏了，还可以给电磁阀线圈通上电用铁制品放在电磁阀上，因为电磁阀线圈通电后电磁阀带磁性能吸住铁制品。如果能吸住铁制品说明线圈是好的，反知说明线圈坏了！

四，电磁阀线圈短路或断路

检测方法：先用万用表测量其通断，阻值趋近于零或无穷大，那说明线圈短路或断路。如果测量其阻值正常（大概是几十欧），还不能说明线圈一定是好的（我有一次测得一个电磁阀线圈阻值大概50欧姆，但电磁阀无法动作，更换该线圈后一切正常），请进行如下较终测试：找一个小螺丝刀放在穿于电磁阀线圈中的金属杆的附近，然后给电磁阀通电，如果感觉到有磁性，那么电磁阀线圈是好的，否则是坏的。 

处理方法：更换电磁阀线圈。

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